Power Quality Primer (Electrical Engineering Primer)

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Product Description

Make power deregulation work for you

With deregulation, the vast pool of power customers is up for grabs. As a utility, are you ready to compete? As a customer, are you ready to choose? In Power Quality Primer, Barry Kennedy gives you specifically designed, ahead-of-the-curve methods. Utilities will learn how to:

Plan successful competitive strategies for every aspect of the business

Market proactive solutions to customers before needs arise

Improve transmission and distribution system quality, efficiency, and power factor performance

Eliminate technical problems such as over-voltages and poor grounding

Design and deliver effective simulations

Build customer-winning, customer-keeping quality, quality control, and service into all facets of your enterprise

As a customer, you'll learn how to pick the utility that meets your power quality needs...solve your own power quality problems and find cost-effective solutions...and perform your own power quality survey

Power Quality Primer (Electrical Engineering Primer) Review

It appears that Mr. Kennedy's book provides a good overview for the layman, keeping math to a minimum. However, some of the math he does include has issues. A quick sanity-check by a technical reviewer would have easily turned up the problems I found. That said, the book intends to serve as a *primer*, not a technical reference, and perhaps does an adequate job of meeting its goal.

After skimming the overview, some of the first equations brought me up short. Voltage of a 60 Hz system is shown as
e = Ep * sin(380.44 t). (Equation 2.2, page 29)
It seems that Pi has an unusually large value in Mr. Kennedy's world, a bit over 3.17 versus the 3.1415926... usually found. Using 377 as value of 60 * 2 * Pi provides a much closer approximation (of 376.9911184...), and the two digits he includes to the right of the decimal may delude some into believing his value accurate.

The example calculation of THD on page 48 also has problems. He shows 6/120 as 50%, but 9/120 as 7.5% and 3/120 as 2.5%. He puts these values into his calculation of THD as 0.5, 0.75, and 0.25, getting 0.093, approximately the correct result for the initial values of 6, 9, and 3/120 volts (0.09354...), but then shows this as 0.3% THD, saying it exceeds the IEEE limit of 5 percent!

I stopped looking at equations at this point, and merely skimmed the rest of the material.

So, if you want an overview of this topic, one that touches on the general problems, their causes, diagnosis, and the range of solutions, this book may meet your needs. For more technical depth, look elsewhere.

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